Alasdair Coyne: Quagga mussels loose in Santa Clara watershed

ASSOCIATED PRESS
Quagga mussels are seen in this photo provided by the California Department of Fish and Game.

AP2008

Quagga mussels, the most invasive exotic species to be found in rivers and lakes in the U.S., have now become established in the Santa Clara River downstream of Lake Piru and in the lake itself. These are the first quagga mussels to be identified in this area.